The 22-year-old actress, who rose to fame as the prim and proper Hermione Granger in the "Harry Potter" films, graces the June 2013 issue of the fashion magazine donning a gray and floral blazer with white tights. The actress opened up about her upcoming role in Sofia Coppolla's "The Bling Ring," explaining why she enjoyed playing the role of "bad girl" Nicki -- including that tattoo.

"Who wouldn't love to go to work in Uggs and very low-slung tracksuit bottoms?" she told the magazine. "The iconic detail of Nicki is her tramp stamp. It's a lotus flower, a Buddhist-like symbol just above her butt crack. Really classy! [Laughs]"

The actress, who recently wowed audiences with her portrayal of Sam in "The Perks of Being a Wallflower," also talked about getting into her character's unique mindset ... which was a challenge.

"With Nicki, I was really taking on a character," she explained. "Some of her lines are so crazy and absurd -- making sure she wasn't a parody was a challenge."

"At one point, I told the costume designer, 'You can see my bra strap in this top; shouldn't we pin it?'" she continued. "And she said, 'No, sweetie -- Nicki is all about her bra strap showing.' I was like, Right, okay, different mind-set."

Coppolla directed and wrote the drama film, which also stars Leslie Mann -- who portrays Watson's character's mother -- as well as Bush singer Gavin Rossdale and Taissa Farmiga, the younger sister of actress Vera Farmiga, who is also known for her role as Violet Harmon in the FX series "American Horror Story."

The movie is slated to hit theaters on June 14, 2013.

While the actress had to adopt and perfect her American accent for the role, she explained that she's always been fond of America in general.

"I've always loved America," she said. "When we came here with 'Harry Potter,' everyone was so warm. Eventually, all of my friends were American, and I think that's why I was attracted to playing Americans, even extreme ones like Nicki. When I'm presented with a character, I think, Hmmm ... I have not had this experience. I don't really know what this would be like. I'll have the experience through the character."

Watson went on to prove that she's in fact like many young women, gushing about the time she ran into her celebrity crush in an elevator -- and froze up.

"My cinematic crush has been pretty much the same since I was 12: Kevin Costner," she said. "I met him in an elevator the other day, and I couldn't even speak. He said hello, because he is lovely like that, and I couldn't say anything back."